I don' t have WP8 phone. I'm planning to buy lumia 820. But I wonder is WP8 can read&write usb like Android phones.
That is correct, you can only access media from your SD card. I.e. Music video image. You can easily manage your SkyDrive files and folders though. MS seem to think local files are old methods and cloud is the future. You are thinking of 820, very fast internet speed on that one. If you are in a good area then cloud storage should work nicely. Think to yourself what files that you want to use on your wp8 which are not image, music or video and also bigger than one megabyte? There really aren't that many. I had a sgs3 which did all the things you mention but I rarely used these features. I prefer the minimal wp8 experience and I'm trying to get used to SkyDrive because I can see that it is the way of the future. Lumia 820 has removable shell, so you can swap out micro SD cards as much as you want.
Sadly there is no option to access media from an SD card on my Lumia 920 and there aren't many video files that I could move between my SkyDrive on my 1.5 GB monthly quota. If there was USB OTG support then I could carry a teeny 32 GB flash drive with me and transfer files to the phone whenever and wherever I wanted. Maybe I should have gone with the 820. Or Android. Or even Symbian!That is correct, you can only access media from your SD card. I.e. Music video image. You can easily manage your SkyDrive files and folders though. MS seem to think local files are old methods and cloud is the future. You are thinking of 820, very fast internet speed on that one. If you are in a good area then cloud storage should work nicely. Think to yourself what files that you want to use on your wp8 which are not image, music or video and also bigger than one megabyte? There really aren't that many..
What about digital audio output through microUSB to a portable DAC?
The L920 (and above) can't be considered "flagship" devices until this is possible.
I enjoy the sound quality with the use of a portable headamp, but the Lumias and Windows Phone really need to support the use of an external DAC.
USB on the go would be great; but one thing I am really missing from Windows Mobile days is a file manager on WP, I really hope Microsoft adds it soon.
I came on here looking for this answer before I commited to a purchase, Verizon only has two top windows phones(8x or 928) and neither have an sd card slot, what good is mass storage support if you don't have a slot to utilize it. USB OTG would have fixed that problem for me and it doesn't even do that but android, IOS, etc all do. what good is sky drive if you have a small data plan. I was all excited to get get a new windows phone but it so limited on storage space that I'd need to carry my laptop around to manage my phones little storage space.
----I don't see this as a major feature requirement. Is that because Android and iPhone do something similar? So unnecessary. What's wrong with wireless?
Completely agree. When I was shopping for a phone I ruled out the 8x (928 wasn't out yet) because of the non-removable battery and no storage expansion. I have a Lumia 822 and put a 32 GB card in it for photos and music. Despite the niggling little omissions, (file manager, USB OTG) I still like the phone very much.I came on here looking for this answer before I commited to a purchase, Verizon only has two top windows phones(8x or 928) and neither have an sd card slot, what good is mass storage support if you don't have a slot to utilize it. USB OTG would have fixed that problem for me and it doesn't even do that but android, IOS, etc all do. what good is sky drive if you have a small data plan. I was all excited to get get a new windows phone but it so limited on storage space that I'd need to carry my laptop around to manage my phones little storage space.